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All you need to do is to get the current user object, get its roles, and then add the suggestion like in the following snippet. The current user also already is available in the $variables.

/**
 * Implements hook_theme_suggestions_HOOK_alter().
 */
function MYTHEME_theme_suggestions_user_alter(array &$suggestions, array $variables) {

  // Define the view mode.
  $view_mode = strtr($variables['elements']['#view_mode'], '.', '_');

  // Create a theme hook suggestion which has the view mode name in it.
  $suggestions[] = 'user__' . $view_mode;
    
  // Get current user.
  $current_user = $variables['elements']['#user'];

  // Get current user's roles.
  $roles = $current_user->getRoles();

  // Add suggestion per role.
  foreach ($roles as $role) {
    $suggestions[] = 'user__' . $view_mode . '__' . $role;
  }
}

This will give you:

<!-- FILE NAME SUGGESTIONS:
   * user--full--administrator.html.twig
   * user--full--authenticated.html.twig
   * user--full.html.twig
   x user.html.twig
-->

All you need to do is to get the current user object, get its roles, and then add the suggestion like in the following snippet. The current user also already is available in the $variables.

/**
 * Implements hook_theme_suggestions_HOOK_alter().
 */
function MYTHEME_theme_suggestions_user_alter(array &$suggestions, array $variables) {

  // Define the view mode.
  $view_mode = strtr($variables['elements']['#view_mode'], '.', '_');

  // Create a theme hook suggestion which has the view mode name in it.
  $suggestions[] = 'user__' . $view_mode;
    
  // Get current user.
  $current_user = $variables['elements']['#user'];

  // Get current user's roles.
  $roles = $current_user->getRoles();

  // Add suggestion per role.
  foreach ($roles as $role) {
    $suggestions[] = 'user__' . $view_mode . '__' . $role;
  }
}

This will give you:

<!-- FILE NAME SUGGESTIONS:
   * user--full--administrator.html.twig
   * user--full--authenticated.html.twig
   * user--full.html.twig
   x user.html.twig
-->

BUT! The problem with this approach is what do you want to happen when a user has multiple roles?

All you need to do is to get the current user object, get its roles, and then add the suggestion like in the following snippet. The current user also already is available in the $variables.

/**
 * Implements hook_theme_suggestions_HOOK_alter().
 */
function MYTHEME_theme_suggestions_user_alter(array &$suggestions, array $variables) {

  // Define the view mode.
  $mode = $variables['elements']['#view_mode'];

  // Create a theme hook suggestion which has the view mode name in it.
  $suggestions[] = 'user__' . $mode;
    
  // Get current user.
  $current_user = $variables['elements']['#user'];

  // Get current user's roles.
  $roles = $current_user->getRoles();

  // Add suggestion per role.
  foreach ($roles as $role) {
    $suggestions[] = 'user__' . $mode . '__' . $role;
  }
}

This will give you:

<!-- FILE NAME SUGGESTIONS:
   * user--full--administrator.html.twig
   * user--full--authenticated.html.twig
   * user--full.html.twig
   x user.html.twig
-->

All you need to do is to get the current user object, get its roles, and then add the suggestion like in the following snippet. The current user also already is available in the $variables.

/**
 * Implements hook_theme_suggestions_HOOK_alter().
 */
function MYTHEME_theme_suggestions_user_alter(array &$suggestions, array $variables) {

  // Define the view mode.
  $view_mode = strtr($variables['elements']['#view_mode'], '.', '_');

  // Create a theme hook suggestion which has the view mode name in it.
  $suggestions[] = 'user__' . $view_mode;
    
  // Get current user.
  $current_user = $variables['elements']['#user'];

  // Get current user's roles.
  $roles = $current_user->getRoles();

  // Add suggestion per role.
  foreach ($roles as $role) {
    $suggestions[] = 'user__' . $view_mode . '__' . $role;
  }
}

This will give you:

<!-- FILE NAME SUGGESTIONS:
   * user--full--administrator.html.twig
   * user--full--authenticated.html.twig
   * user--full.html.twig
   x user.html.twig
-->

All you need to do is to get the current user object, get its roles, and then add the suggestion like in the following snippet. The current user also already is available in the $variables.

/**
 * Implements hook_theme_suggestions_HOOK_alter().
 */
function simple_form_theme_suggestions_user_alter(array &$suggestions, array $variables) {

  // Define the view mode.
  $mode = $variables['elements']['#view_mode'];

  // Create a theme hook suggestion which has the view mode name in it.
  $suggestions[] = 'user__' . $mode;
    
  // Get current user.
  $current_user = $variables['elements']['#user'];

  // Get current user's roles.
  $roles = $current_user->getRoles();

  // Add suggestion per role.
  foreach ($roles as $role) {
    $suggestions[] = 'user__' . $mode . '__' . $role;
  }
}

This will give you:

<!-- FILE NAME SUGGESTIONS:
   * user--full--administrator.html.twig
   * user--full--authenticated.html.twig
   * user--full.html.twig
   x user.html.twig
-->

All you need to do is to get the current user object, get its roles, and then add the suggestion like in the following snippet. The current user also already is available in the $variables.

/**
 * Implements hook_theme_suggestions_HOOK_alter().
 */
function MYTHEME_theme_suggestions_user_alter(array &$suggestions, array $variables) {

  // Define the view mode.
  $mode = $variables['elements']['#view_mode'];

  // Create a theme hook suggestion which has the view mode name in it.
  $suggestions[] = 'user__' . $mode;
    
  // Get current user.
  $current_user = $variables['elements']['#user'];

  // Get current user's roles.
  $roles = $current_user->getRoles();

  // Add suggestion per role.
  foreach ($roles as $role) {
    $suggestions[] = 'user__' . $mode . '__' . $role;
  }
}

This will give you:

<!-- FILE NAME SUGGESTIONS:
   * user--full--administrator.html.twig
   * user--full--authenticated.html.twig
   * user--full.html.twig
   x user.html.twig
-->